Does anyone know how to get AC2 beta installed with wine? I get to the part where you run Setup.Exe and it says my version of windows isn't supported. WTF. let me determine that!
Is there a way to fool installers to think i'm running win98 or something?

I know this is a very late reply, but this is also one of the only topic of Wine + Asherons Call 2, and since AC2 has been relaunched, i will reply with my experience

Asherons Call 2 Beta (AC2 Relaunch) is installable and you can start the game, but crashes after intro (Character selection screen)

What works (wine 1.5):
Setup (wine start AsheronsCall2.msi)
AC2Config.exe - No problem, but incorrect hardware detecting (says i got a Nvidia 8800 GTX)
ac2Launcher.exe - crashes when it exits, eg press on exit button, but this doesn't mean anything for the game it self, backtrace
ac2client.exe crashes after intro, when showing character selector (backtrace: http://pastebin.com/PkS0X9br)

Wine 1.4
Couldn't not get ac2launcher.exe to work at all, but upgradring to 1.5 helped